创建Dockerfile
首先，创建目录python,用于存放后面的相关东西。
| root@web3:~$ mdkir -p ~/python ~/python/myapp |
myapp目录将映射为python容器配置的应用目录
进入创建的python目录，创建Dockerfile
| FROM buildpack-deps:jessie |
| # remove several traces of debian python |
| RUN apt-get purge -y python.* |
| # http://bugs.python.org/issue19846 |
| # > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK. |
| ENV LANG C.UTF-8 |
| # gpg: key F73C700D: public key "Larry Hastings <larry@hastings.org>" imported |
| ENV GPG_KEY 97FC712E4C024BBEA48A61ED3A5CA953F73C700D |
| ENV PYTHON_VERSION 3.5.1 |
| # if this is called "PIP_VERSION", pip explodes with "ValueError: invalid truth value '<VERSION>'" |
| ENV PYTHON_PIP_VERSION 8.1.2 |
| RUN set -ex \ |
| && curl -fSL "https://www.python.org/ftp/python/${PYTHON_VERSION%%[a-z]*}/Python-$PYTHON_VERSION.tar.xz" -o python.tar.xz \ |
| && curl -fSL "https://www.python.org/ftp/python/${PYTHON_VERSION%%[a-z]*}/Python-$PYTHON_VERSION.tar.xz.asc" -o python.tar.xz.asc \ |
| && export GNUPGHOME="$(mktemp -d)" \ |
| && gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$GPG_KEY" \ |
| && gpg --batch --verify python.tar.xz.asc python.tar.xz \ |
| && rm -r "$GNUPGHOME" python.tar.xz.asc \ |
| && mkdir -p /usr/src/python \ |
| && tar -xJC /usr/src/python --strip-components=1 -f python.tar.xz \ |
| && rm python.tar.xz \ |
| \ |
| && cd /usr/src/python \ |
| && ./configure --enable-shared --enable-unicode=ucs4 \ |
| && make -j$(nproc) \ |
| && make install \ |
| && ldconfig \ |
| && pip3 install --no-cache-dir --upgrade --ignore-installed pip==$PYTHON_PIP_VERSION \ |
| && find /usr/local -depth \ |
| \( \ |
| \( -type d -a -name test -o -name tests \) \ |
| -o \ |
| \( -type f -a -name '*.pyc' -o -name '*.pyo' \) \ |
| \) -exec rm -rf '{}' + \ |
| && rm -rf /usr/src/python ~/.cache |
| # make some useful symlinks that are expected to exist |
| RUN cd /usr/local/bin \ |
| && ln -s easy_install-3.5 easy_install \ |
| && ln -s idle3 idle \ |
| && ln -s pydoc3 pydoc \ |
| && ln -s python3 python \ |
| && ln -s python3-config python-config |
| CMD ["python3"] |
| root@web3:~/python$ docker build -t python:3 |
| root@web3:~/python$ docker images python:3.5 |
| REPOSITORY TAG IMAGE ID CREATED SIZE |
| python 3.5 045767ddf24a 9 days ago 684.1 MB |
查找Docker Hub上的python镜像
| root@web3:~/python$ docker search python |
| NAME DESCRIPTION STARS OFFICIAL AUTOMATED |
| python Python is an interpreted,... 982 [OK] |
| kaggle/python Docker image for Python... 33 [OK] |
| azukiapp/python Docker image to run Python ... 3 [OK] |
| vimagick/python mini python 2 [OK] |
| tsuru/python Image for the Python ... 2 [OK] |
| pandada8/alpine-python An alpine based python image 1 [OK] |
| 1science/python Python Docker images based on ... 1 [OK] |
| lucidfrontier45/python-uwsgi Python with uWSGI 1 [OK] |
| orbweb/python Python image 1 [OK] |
| pathwar/python Python template for Pathwar levels 1 [OK] |
| rounds/10m-python Python, setuptools and pip. 0 [OK] |
| ruimashita/python ubuntu 14.04 python 0 [OK] |
| tnanba/python Python on CentOS-7 image. 0 [OK] |
这里我们拉取官方的镜像,标签为3.5
| root@web3:~/python$ docker pull python:3.5 |
在~/python/myapp目录下创建一个 helloworld.py 文件，代码如下：
| #!/usr/bin/python |
| print("Hello, World!"); |
| root@web3:~/python$ docker run -v $PWD/myapp:/usr/src/myapp -w /usr/src/myapp python:3.5 python helloworld.py |
命令说明：
-v $PWD/myapp:/usr/src/myapp :将主机中当前目录下的myapp挂载到容器的/usr/src/myapp
-w /usr/src/myapp :指定容器的/usr/src/myapp目录为工作目录
python helloworld.py :使用容器的python命令来执行工作目录中的helloworld.py文件
输出结果：
| Hello, World! |
